Fixture for a pool or spa



FIG. 1 is a front elevational view of a fixture for a pool or spa showing our new design;

FIG. 2 is a right side elevational view thereof with the left side elevational, top and bottom plan views being mirror images; and,

FIG. 3 is a front perspective view thereof.

The broken lines in FIGS. 1–3 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a fixture for a pool or spa, as shown and described. 